JPH0328532Y2 - - Google Patents

Description

[Detailed explanation of the idea] (b) Industrial application fields The present invention relates to a printed circuit board connection mechanism.

(b) Conventional technology When connecting a printed circuit board to a connector, the printed circuit board is notched at both ends to form a connector insertion part that is slightly narrower than the connector insertion opening, and the connector is connected to the printed circuit board in its surface direction. It is supported so that it does not shift. Such a configuration is also disclosed in Japanese Patent Publication No. 59-21511. Therefore, when the printed circuit board is normally attached to the connector, it is supported without play. Further, the contacts used in the connector are configured to sandwich the connector insertion portion in the thickness direction, and the electrode patterns formed on the connector insertion portion to face each other form a common electrode.

However, as connectors have become smaller in recent years, separate electrodes are formed independently on both sides of the connector insertion part, and the contacts in the connector that come into contact with these electrodes are also formed in two rows, corresponding to the front side and the back side. ing.

(c) Problems that the invention aims to solve However, when a printed circuit board is attached to a small connector such as the one mentioned above, the connector insertion part is clamped by the contacts, and the clamping position is a position where the biasing force of the contacts is balanced. becomes. Therefore, when some of the contacts aligned on one side exhibit a strong biasing force, the connector insertion part is pushed to the opposite side, and the remaining contacts with a small protrusion amount inwardly make sufficient contact with the opposing electrode pattern. This resulted in poor contact. This phenomenon occurred significantly when the thickness of the printed circuit board was thinner than the insertion gap of the connector.

(d) Means for solving the problem Therefore, in view of the above-mentioned points, the present invention is characterized in that thick portions of equal thickness are formed on both sides of the vicinity of the character-shaped notch for forming the connector insertion portion. shall be.

(E) Effect Therefore, according to the present invention, by inserting the thick part into the insertion gap of the connector, the connector insertion part can make appropriate contacts with the electrodes on both sides defined approximately in the middle of the insertion gap. Contact with pressure force.

(F) Embodiment The present invention will be described below with reference to an illustrative embodiment.

First, the connector of this embodiment has contacts 1...
Insertion openings 2, 2 are formed in two locations, each having 15 pairs of opposite alignments, and connecting portions 3, 3, 3 are formed on both sides of these insertion openings 2, 2. Furthermore, each contact 1...
is molded on the connector body CN made of synthetic resin, and the protrusion 1a formed near the tip serves as a contact point. Further, the printed circuit board PB of this embodiment has two connector insertion portions 5, 5 formed by letter-shaped notches 4, 4, 4, 4 on one side. Fifteen electrode patterns 6 are formed on each of the front and back surfaces of each connector insertion portion 5, 5. Note that each electrode pattern 6 is connected to a circuit pattern (not shown) on a printed circuit board to form an electrically independent connection terminal.

The feature of this embodiment is that discarded patterns 7 are formed in the printed circuit board PB along the character-shaped notches 4, 4, 4, 4, and a silk-printed layer 8 is further formed on each discarded pattern 7. The point is that the thick portions 9, 9, 9 are formed by forming. These thick parts 9, 9, 9 are formed to be slightly thinner than the gap between the connecting parts 3..., and as shown in FIG.
2, the printed circuit board PB has thick parts 9,
9, 9 and the connecting parts 3, 3, 3 (positioned at 0.04mm in this example) The position will be restricted to the center compared to the conventional position in the state.

In this example, silk printing is performed on the waste pattern to form a thick part, but if it is necessary to further increase the thickness, the necessary thickness can be obtained by repeating silk printing several times. . It goes without saying that spacers may be attached to both sides in order to form a thick portion.

(g) Effects of the invention Therefore, according to the invention, since the printed circuit board is defined by the thick part at the center of the insertion opening of the connector, the contacts on both sides can each contact the electrode pattern with an appropriate crimp force. become.

[Brief explanation of the drawing]

Each of the figures shows an embodiment of the present invention; Fig. 1 is an explanatory diagram of a printed circuit board, Fig. 2 is a plan view of a connector, Fig. 3 is a sectional view taken along line X-X' in Fig. 2, and Fig. 4 is an explanatory diagram of a printed circuit board. 1 and 2 respectively show cross-sectional views of the printed circuit board inserted. PB...Printed circuit board, CN...connector, 9...thick part, 3...connecting part.

Claims (1)

[Claims for Utility Model Registration] A printed circuit board in which independent electrode patterns are formed on both sides of a connector insertion portion formed by a letter-shaped notch, and a discarded pattern is formed along the notch, and the connector insertion portion is inserted. a connector main body having an insertion opening having an insertion opening, two rows of contacts that contact the electrode patterns on a surface of the insertion opening facing the electrode pattern, and connecting portions on both sides of the insertion opening; A connecting mechanism, characterized in that a thick part slightly thinner than the interval width of the connecting part is formed on the discarded pattern of the printed circuit board by silk printing.